Electrical connector

1. An electrical connector configured to electrically connect a chip module having a plurality of conductive sheets to a circuit board, the electrical connector comprising:

an insulating body, having an upper surface and a lower surface opposite to each other and a plurality of terminal holes running through the upper surface and the lower surface, wherein the upper surface faces the chip module, and the lower surface faces the circuit board; and

a plurality of terminals, wherein each of the terminals has a connecting portion correspondingly located in a corresponding one of the terminal holes, a conducting portion formed by extending from the connecting portion and configured to conduct the circuit board, an elastic arm formed by bending upward and extending from the connecting portion and extending upward out of the corresponding one of the terminal holes, and a contact portion formed by bending upward and extending from the elastic arm, and wherein when the chip module is pressed downward, a bottom surface of each of the conductive sheets downward abuts a top surface of the contact portion, and the elastic arm is compressed and deforms downward;

wherein the contact portion, the elastic arm, the connecting portion and the conducting portion are integrally formed, and a thickness of the connecting portion is greater than a thickness of the contact portion, and

wherein the connecting portion has a main body portion and a protruding portion protruding from the main body portion along a thickness direction of the main body portion, the elastic arm bends upward and extends from the main body portion, a thickness of the main body portion is equal to a thickness of the elastic arm, a strip connecting portion is formed by extending from the main body portion to be connected to a strip, and the strip connecting portion as a whole is higher than the protruding portion.

2. The electrical connector according to claim 1 , wherein the thickness of the connecting portion is greater than a thickness of the elastic arm.

3. The electrical connector according to claim 1 , wherein the thickness of the connecting portion is greater than a thickness of the conducting portion.

4. The electrical connector according to claim 3 , wherein the circuit board is provided with a plurality of insertion holes, each of the insertion holes corresponds to the conducting portion of one of the terminals, and the conducting portion of each of the terminals is a fish-eye structure and is in interference fit with a corresponding one of the insertion holes.

5. The electrical connector according to claim 1 , wherein a thickness of the protruding portion is greater than the thickness of the main body portion.

6. The electrical connector according to claim 1 , wherein in a side projection of the connecting portion, a longitudinal axis of the protruding portion passes through the elastic arm.

7. The electrical connector according to claim 1 , wherein in a side projection of the connecting portion, a longitudinal axis of the protruding portion passes through the conducting portion.

8. The electrical connector according to claim 1 , wherein a thickness of the conducting portion is equal to the thickness of the connecting portion, the circuit board is provided with a plurality of conducting sheets, and a bottom end of the conducting portion is in contact with a corresponding one of the conducting sheets.

9. The electrical connector according to claim 1 , wherein a thickness of the conducting portion is greater than the thickness of the contact portion, the circuit board is provided with a plurality of conducting sheets, the conducting portion is concavely provided with a plurality of grooves, and a plurality of solders are correspondingly accommodated in the grooves and are soldered to a same conducting sheet of the conducting sheets.

10. The electrical connector according to claim 1 , wherein the terminals comprise at least one signal terminal and at least one power terminal.

11. The electrical connector according to claim 1 , wherein a top end of the main body portion is lower than the upper surface, the thickness of the main body portion is equal to the thickness of the contact portion and a thickness of the conducting portion, a top end of the protruding portion and a bottom end of the protruding portion are connected to the main body portion, the top end of the protruding portion is lower than the top end of the main body portion, the protruding portion has a connecting surface connecting the top end of the protruding portion and the bottom end of the protruding portion, and the connecting surface is located on the main body portion.

12. An electrical connector configured to electrically connect a chip module having a plurality of conductive sheets to a circuit board, the electrical connector comprising:

an insulating body, having an upper surface and a lower surface opposite to each other and a plurality of terminal holes running through the upper surface and the lower surface, wherein the upper surface faces the chip module, and the lower surface faces the circuit board; and

a plurality of terminals, wherein each of the terminals has a connecting portion correspondingly located in a corresponding one of the terminal holes, a conducting portion formed by extending from the connecting portion and configured to conduct the circuit board, an elastic arm formed by bending upward and extending from the connecting portion and extending upward out of the corresponding one of the terminal holes, and a contact portion formed by bending upward and extending from the elastic arm, and wherein when the chip module is pressed downward, a bottom surface of each of the conductive sheets downward abuts a top surface of the contact portion, and the elastic arm is compressed and deforms downward;

wherein the contact portion, the elastic arm, the connecting portion and the conducting portion are integrally formed, and a thickness of the connecting portion is greater than a thickness of the contact portion, and

wherein the connecting portion has a main body portion and a protruding portion protruding from the main body portion along a thickness direction of the main body portion, the elastic arm bends upward and extends from the main body portion, a thickness of the main body portion is equal to a thickness of the elastic arm, the protruding portion is clamped between the main body portion and a side wall of the corresponding one of the terminal holes, and a gap is formed between the protruding portion and the side wall.

13. The electrical connector according to claim 12 , wherein a top end of the main body portion is lower than the upper surface, the thickness of the main body portion is equal to the thickness of the contact portion and a thickness of the conducting portion, a top end of the protruding portion and a bottom end of the protruding portion are connected to the main body portion, the top end of the protruding portion is lower than the top end of the main body portion, the protruding portion has a connecting surface connecting the top end of the protruding portion and the bottom end of the protruding portion, and the connecting surface is located on the main body portion.

14. The electrical connector according to claim 12 , wherein in a side projection of the connecting portion, a longitudinal axis of the protruding portion passes through the elastic arm.

15. The electrical connector according to claim 12 , wherein a thickness of the conducting portion is greater than the thickness of the contact portion, the circuit board is provided with a plurality of conducting sheets, the conducting portion is concavely provided with a plurality of grooves, and a plurality of solders are correspondingly accommodated in the grooves and are soldered to a same conducting sheet of the conducting sheets.

16. An electrical connector configured to electrically connect a chip module having a plurality of conductive sheets to a circuit board, the electrical connector comprising:

an insulating body, having an upper surface and a lower surface opposite to each other and a plurality of terminal holes running through the upper surface and the lower surface, wherein the upper surface faces the chip module, and the lower surface faces the circuit board; and

a plurality of terminals, wherein each of the terminals has a connecting portion correspondingly located in a corresponding one of the terminal holes, a conducting portion formed by extending from the connecting portion and configured to conduct the circuit board, an elastic arm formed by bending upward and extending from the connecting portion and extending upward out of the corresponding one of the terminal holes, and a contact portion formed by bending upward and extending from the elastic arm, and wherein when the chip module is pressed downward, a bottom surface of each of the conductive sheets downward abuts a top surface of the contact portion, and the elastic arm is compressed and deforms downward;

wherein the contact portion, the elastic arm, the connecting portion and the conducting portion are integrally formed, and a thickness of the connecting portion is greater than a thickness of the contact portion, and

wherein each of the terminals has a plurality of elastic arms formed by bending upward from the connecting portion and a plurality of contact portions, each of the contact portions is formed by bending upward and extending from a corresponding one of the elastic arms, and the contact portions of a same terminal upward abut a same conductive sheet of the conducting sheets of the circuit board.

17. The electrical connector according to claim 16 , wherein a trench is formed between two adjacent elastic arms of the same terminal, the trench is formed by laser cutting, and a width of the trench is less than a thickness of each of the elastic arms.

18. The electrical connector according to claim 16 , wherein a thickness of the conducting portion is equal to the thickness of the connecting portion, the circuit board is provided with a plurality of conducting sheets, and a bottom end of the conducting portion is in contact with a corresponding one of the conducting sheets.

19. The electrical connector according to claim 16 , wherein a thickness of the conducting portion is greater than the thickness of the contact portion, the circuit board is provided with a plurality of conducting sheets, the conducting portion is concavely provided with a plurality of grooves, and a plurality of solders are correspondingly accommodated in the grooves and are soldered to a same conducting sheet of the conducting sheets.

20. The electrical connector according to claim 16 , wherein the connecting portion has a main body portion and a protruding portion protruding from the main body portion along a thickness direction of the main body portion, the elastic arm bends upward and extends from the main body portion, a thickness of the main body portion is equal to a thickness of the elastic arm, a top end of the main body portion is lower than the upper surface, a top end of the protruding portion and a bottom end of the protruding portion are connected to the main body portion, the top end of the protruding portion is lower than the top end of the main body portion, the protruding portion has a connecting surface connecting the top end of the protruding portion and the bottom end of the protruding portion, and the connecting surface is located on the main body portion.